The MMBT2222A from Hy Electronic (Cayman) is a Bipolar Junction Transistor with Emitter Base Voltage 6 V, Base Emitter Saturation Voltage 1.2 to 2 V, Emitter Cut off Current 100 nA, Collector Base Voltage 75 V, Collector Cut off Current 10 to 100 nA. Tags: Surface Mount, NPN Transistor. More details for MMBT2222A can be seen below.